another 32 64 question

I read that I can not go from 32 xp to 64 vista. Does that mean that I can do that from within xp or does that mean that if I do a clean install to vista 64 I will loose everything, files and such. I have a Intel D 940 3.20 with a Intel D975x motherboard
Just want to take advantage of any speed increases.
Thanks

Answered in previous post.
Backup any data before installing pre-release, still indevelopment software. -- -- Andre Windows Connected | http://www.windowsconnected.com Extended64 | http://www.extended64.com Blog | http://www.extended64.com/blogs/andre http://spaces.msn.com/members/adacosta
"Robert" wrote in message

I read that I can not go from 32 xp to 64 vista. Does that mean that I can do that from within xp or does that mean that if I do a clean install to vista 64 I will loose everything, files and such. I have a Intel D 940 3.20 with a Intel D975x motherboard
Just want to take advantage of any speed increases.
Thanks